Jayosbrand was a droid-producing enterprise. By the year 3 ABY, they had engineered the orb-shaped G-90 assassin droid, who was first a member of the Assassins Guild, and subsequently served Darth Vader, the Dark Lord of the Sith, and then the Skakoan insurgent Jul Tambor. The droids were a flagship product.
The reference book Star Wars Encyclopedia: The Comprehensive Guide to the Star Wars Galaxy, released in 2024, included a mention of Jayosbrand.